Andersen Tax LLC is a tax firm headquartered in Chicago, Illinois, United States. It provides tax, valuation, financial advisory and consulting services to individuals and corporate clients. It has offices in Baltimore, Boston, Dallas, Florham Park, Greenwich, Harrisburg, Houston, Long Island, Los Angeles, New York City, Orange County, Philadelphia, San Francisco, Seattle, Silicon Valley, Washington, D.C., West Palm Beach and Woodland Hills. With the establishment of Andersen Global in 2013 the firm has since added locations in Europe, Latin America, Africa and the Middle East. Andersen Tax was established as Wealth and Tax Advisory Services in July 2002. In the wake of Arthur Andersen's demise, several former partners of Arthur Andersen formed Wealth and Tax Advisory Services USA Inc., a subsidiary of HSBC USA, Inc, to handle a portion of Arthur Andersen's tax practice. The new HSBC Private Client Services Group would serve the wealth and tax advisory needs of high-net-worth individuals. On December 31, 2007, HSBC USA Inc. sold Wealth & Tax Advisory Services USA Inc. to participating WTAS managing directors in a management buyout resulting in WTAS LLC. In consideration for the sale, HSBC would receive US $5 million in cash and deferred notes with a principal amount totaling US $60.85 million.